[texhax] Under-Sized Angle Brackets

[Mc Kiernan, Daniel Kian,]

I'm attempting to produce formulae some of which have large angle brackets as delimiters.  Some of these should be, say, 9 lines tall.  But, when pdfeTeX renders them, none are a full three lines tall.  Other delimiters (parentheses, brackets, and braces), large and small, are rendering fine.

I'm using packages graphicx, latexsym, amsmath, amssymb.

Thanks in advance for whatever help might be offered.